Operator's Manual

Rad-97 Chapter 15: Specifications
www.masimo.com 196 Masimo
Guidance and Manufacturer's Declaration - Electromagnetic Immunity
Note 1: At 80 MHz and 800 MHz, the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.
(a) Field strengths from fixed transmitters, such as base stations for radio
(cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio
broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the
electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey
should be considered. If the measured field strength in the location in which the ME
Equipment is used exceeds the applicable RF compliance level above, the ME Equipment
should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as re-orienting or relocating the ME
Equipment.
(b) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [V1]
V/m.
Recommended Separation Distances
Recommended Separation Distance Between Portable and Mobile RF Communication
Equipment and the ME Equipment
The ME Equipment is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the ME Equipment can help
prevent electromagnetic interference by maintaining a minimum distance between portable
and mobile RF communications equipment (transmitters) and the ME Equipment as
recommended below, according to the maximum output power of the communication
equipment.
Rated maximum output power
of transmitter (W)
Separation Distance According to Frequency of
Transmitter (m)
150 K Hz to 80
MHz
d = 1.17*Sqrt (P)
80 MHz to 800
MHz
d = 0.18*Sqrt (P)
800 MHz to
2.5GHz
d = 0.35*Sqrt (P)
0.01 0.12 0.018 0.035
0.1 0.37 0.057 0.11
1 1.17 0.18 0.35
10 3.7 0.57 1.1